2189408 has 48 divisors (see below), whose sum is σ = 4903920. Its totient is φ = 953856.

The previous prime is 2189399. The next prime is 2189417. The reversal of 2189408 is 8049812.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2189399) and next prime (2189417).

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7766 + ... + 8042.

It is an arithmetic number, because the mean of its divisors is an integer number (102165).

2^2189408 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2189408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2451960).

2189408 is an abundant number, since it is smaller than the sum of its proper divisors (2714512).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2189408 is a wasteful number, since it uses less digits than its factorization.

2189408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 319 (or 311 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 32.

The square root of 2189408 is about 1479.6648269118. The cubic root of 2189408 is about 129.8500835926.

The spelling of 2189408 in words is "two million, one hundred eighty-nine thousand, four hundred eight".